I started going to the EEC several years ago because I wanted to learn to kayak. Their kayaking program is quite nice. They supply everything that you need. For most trips, you meet at the EEC and the naturalist drives everyone in a van to the river or lake where you'll be paddling. The trips range from a couple of hours in the morning or evening to the occasional 4 day trip. Monica, the naturalist who runs the trips, is a delight being quite knowledgeable about kayaking, birds, plants, and other things that you'll experience on the trips.
Since then, I've also gone to the EEC to walk around their grounds as well as joining one of their cross country ski trips. All in all, it's a delightful part of Somerset County (though it is available to those outside the county often at the same rate as for county residents).